Drier.



E. L. WALLACE a E. MEYER.

DRIEB..

.LPILIOATION FILED FEB. 12, 1906.

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E. L. WALLACE & F. MEYER.

DBIEB.

APPLICATION IILBD FEB. 12. 19%.

Patented May 1s, 1909.

2 BHEETB-SHEBT E.

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- 'tion o our invention as applic ,UNITED STATES rArENroEFrcE.

EDWIN L. WALLACE AND FRANK MEYER, OENIAGARA FALLS, NEW YORK, AssIcNoas, rro THE snnnnn'an WHEAT COMPANY, or NIAGARA FALLS, NEW YORK.

Dama.

Speciation of Letters Patent. y

Patented any 1s, 1909.

Application l'ed February 1'2, 1906. Serial No. 300,817.

To all 'whom it may concern:

`Be it known that we 'EDWIN'L WALLACE and FRANK MEYER, tota citizens of the United States, and residents of Niagara Falls, in thecounty of Niagara and State of New York, have made a certain new and useful Invention in Driers and we declare the iollowing to be a full, clear, and exact description o skilled the art to Whichit appertains to make and use the invention, reference being had to the accompanying drawin s, and to letters or figures of reference mar ed thereon which for@ a part of this specification.

ignre 1 isa side elevation artly in secd'). Fig. 2 is a detail fragmentary view showing iparts in position for unlatching the hook s rom the catches 1. Fig.v 3 is a top 1an view of the same with chains kremove F' 4 is a detail front view of the hook 8 and olt 5 with adjacent parts. F.g. 5 isa detail side view f the same. i. the bolt and adacent parts. f

The invention relates to evaporators or drying machines, and it consists inthe n'ovel construction and combination of' parts as hereinafter set forth.

'The ('xhject of the invention is to facilitate ydrying or evaporating` largeJ quantities of small articles, contained in moving carriers or racks. Y

.In the accompanying drawings, illustrat- -ing the invention `the letter a., 4designates an designed to kee the racks e, in

elongated casing or hot'air chamber, which vis provided atene end with doors b, .and yat theother endwith doors c. Along the caslingextend guides or trackways d, which are roper position inline wit each other, Wlpiile moving through the casing. In the construction i illustrated, the casters f, of the racks c. en-

gage the uideu'ays d. 'Each rack is a recta lar rame, on four casters, provided wit slide-'Ways c, for the 'drying pans h, which areinova le. As cach rack is arranged to hold Aalargenumher of these pans, E

the evaporatonis designedto have reat caf acity. Thedr ing pans are usua ly light 50i li ames of. wrec 0th bound with inetalnV Along the bottom of tle casing and entirely Withinthe same extends centrally the upper branch of an endless chain or conveyor which vis operated by suitable power ftpk pliedv to the shaft oll one of its sprocket the same, such as will enable otlers 6 is a detail top view of Wheels m, in such wise that the chain hasa continuous slowmo vement timed to rovide as nearly as practicable for drying o the articles in a rackwhile it 's moving Vfrom one end of the casing to the ther.

Hot air from a stove or heater 13, enters the casing at one end and is caused to move hrough said casing by means of a suction At) the entrance end of the casin the doors b, aredesigned to be laterally hinged, and to meet in the center, Where they engage b la ping, and are secured in closed position y olts fn. In order to introduceV a rack into the casing, these doors are opened and, after the rack has been pushed in, quickly closed.

At certain distances apart along the driv ing chain, are located 'pward projecting catches r, which are attached to, or form part of links of, said chainl These catches are usually of rectangular form in section, and they are desi ned to readily engage gravitating hooks s, o the racks, as Well as to hethrough an opening therein within the casing to return to the entrance end through an opening in the licor, also within the casing.

4As the rack is pushed into the Casin. thc

Vchain in its movement toward the disc arge 'end of said cas' en ages by its link catch, the hook s, of sal rac i which is plvoted to a vbracket t, which is,.centrally secured to the bottom of thc front of the rack in such Wiso that it is in line with said chain and projects Slightly in 'front of the rack. The-hook s, is a gravit-ating hook, and it is provided at its rear end with an npturned stop v)ortion n, which is designed. to engage the hottoin of the bracket plate, to prevent. the hook shank from bccomuw inclined downward below the horizontal.` 'lhe hook cud. or head w, how-` ever, can easily risc, and it is provided with a sloping or beveled loweredge or lace u, for a pur ose hereinafter explained. As the drive cham reaches the dischargeend ol" the casing, its downward movement over the sprocket wheel at this end, releases the rack hook from the link catch, and the rack therefore remains stationary in the casing at its discharve end near thedischarge doors, where it can he kept until the dryin is completed. The rack ls provided with a bracket 2,`

which rojects slightly in rear of its bottom centr y' and is provided with a roller bearing 3. It is apparent that as the first rack remains stationary-*iii the discharge end of the casing, the next rack on the chain will be `soon brought up to it, and would push it from the drive chain, until the discharged. The discharge doors c, are lat- 'erally hinged, and meet inthe center, closing fward inclined arm 10, which is height and in by a broad flange or lap joint. The lap flange 4 is rovided at its upper end with an upward sli ing bolt 5, the up er end of which is designed to engage the en s of two sprin pins 6, which im 1n e a ainst the bevele sides 7, of said en gBy rawing the bolt 5, downward the doors become unfastened at the top.

The bottom fastening consists of a pivoted hook S, which is designed to engage a catch 9, rising from the floor of the casing, by gravitation. This hook has an upward and rearat the proper osition to enga e the hook of the rack, shoud such rack be orced against the doors, through any failure ol' the rack hooks in rear to become disengaged from the drive chain. In case of such an accident, the doors Will give at the top through the automatic disengagement of the s ring pin `catches from the beveled end of t e fastening bolt 5. And the gravity hook.at the bot tom of the doors bein raised out of engagement by the hook of le rack, the doors will at the same time -ve Way at the bottom. rlhe end 12, of the ottom fastening hook 8, is designed to project through the flange of the door, in position to be easil depressed by t-he foot of e attendant suc action disenfvaging the lower art of the doors, whose up er portions can e atthe same time disengagedby pulling down the slide bolt 5.

he heater 13, is usually provided with an elongated tube, 14, one end of which commu t, nicates with the entrance end of the casing, and th'e other end of which communicates with the discharge end thereof. That portion of the tube which communicates with i; e entrance end is provided with an outlet pipe 15, and at this junction is placed a damper 16. A damper 17, is also located near the cold air inlet 18, of the heater. The course of the heated air is toward the en.` trance end of the casing and through the pige 14, back to the heater.

aying thus described the invention, what we claim and desire to secure by Letters Patent is- 1 In an evaporator, the combination with 4means for introduc` thereto, means for e means for introducing a an endless .drive chain, having'a series of catches of "aseries of horizontally traveling racks, their normally'horizontal automatic engagling hoolgs 'and disengagingbearings.-

2. n an evaporator, the com mation with an'elongated casing, and its guides, of an endless drive chain, having av series of catches, and a series of horizontally traveling racks each having a forward projecting Vantoinatic engaging hook and a rear disengaginglbearing.

3. In an evaporator, the comblnation wit 1 an elongated casi and its discharge doors, of guide-ways in said casing, an end ess drive chain, its series of catches and a series of horizontallyr traveling racks, their. pivoted gravitating hooks and their disengagement earings.

4. In an evaporator, the combination with an elongated casing and its pivoted discha e doors, of guide-ways in said casing, an eI less drive chain, its series of catches, a series of horizontally traveling racks, their pivoted horizontal hooks, and means for fastening said discharge doors.

5. In an evaporator, the combination with an elongated casing, its pivoted dischargev doors, and their fastening devlces, ofgulde-Y Ways insaid casing, an endless drive chain, its series of catches, and a series of racks havin forward projecting gravity hooks.

6. i drying machine, comprising a-jcasing, means for introducing a dryin medium thereto, means for exhausting t e drying medium from said casing, a conveyerv passing from end to end of saidcasing and terminating at each end within the same, a rack or the material, gravity hooks racks for carryn g carried by said rack or racks for e 'the conveyer, and provided with m'ns whereb said hooks are automaticaliy released rom the conveyer when they meet an obstruction to' thereby bring the racks to rest. l

7. A drying machine, com rising a casing, a dryin medium austing t e drying medium from said casing, a conveyerpass'ing from-end 'to end of said casing and term1` nating at each end Within the same, racks for earrymg the material to be dried, dogs car# ried by the conveyer, and hooks associated with the racks for engaging said dogs for propelling the lracks through said casing.

8. A drying machine, com rising a casing, ryin 4medium. thereto, means for exhausting medium from said casing a conveyor passing from end to endof said casing and terrrnnatin'g at each end within the same, racks for carrymg the material to be dried, dogs carried by `the conve er, and navitating hooks associated with tV e racks 01` engagin said dogs for propelling the racks throng said casing.

9, A drying machine, comprising a casing,

los

e drying means for intl'mluuing n drying lnefliuml thereto, means 'fm' exhausting the drying i sume,

n'ledium from SI1-id casing, n cunvvyer )messing hooks associated yelling thv rurks through saitl casing, said m lmaks' being pruvitled with actuating hntls ed t0 effect autmmitit lisong'ngfmeht of the hooks from Suid dogs. V

10. A drying nuuhine, comprising n vusing, if, means Vfor 'intlQdut-ing' a drying .mmlium thereto, a cmwever pnssing trnm 'and to end nl' Suhl x'zlsillg unl turmixmtmgi within w r1 nick or. rau-hs 'fm' mirying tht z. thi-inl, gravity hunks t'm'i-it-l h v will ,w-h m' l'mks 'for engaging thv mm'vyvr :mi gil-n- 20 vided with nums infrohgf .will html. uw automatically lvlvzlsml from thv t-lmvvyvr when the \"m0ct nn nhstx'11 tiu11 tu rhm'vlh hring thtl rnc-ks 4tu rest.

In testimony whorenf we. nIix nur sight-t 25 i tures, 'present-e of two uitnvssfw. which when met h v im 0 instruction are mlupt- 

